{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["geographical phenomenon", "organization", "mythical figure"], "input": "Pigs have a well-developed sense of smell , and use is made of this in Europe where they are trained to locate underground truffles ."}
{"geographical phenomenon": [], "organization": [], "mythical figure": []}